Locke and Aiken lead their soldiers onto the ring fragment’s surface, but encounter a deadly new threat.

Plans are set in motion to complete the mission at all costs, but will they survive long enough to see it through?

With each passing moment, choices are made, battle lines drawn, and each soldier’s resolve is put to the ultimate test. When the pieces start falling, who will remain loyal, and who will remain alive?

To accomplish their mission, true soldiers make the ultimate sacrifice, leaving the others with only a race to escape and the will to survive.